126881979 has 16 divisors (see below), whose sum is σ = 195793920. Its totient is φ = 71585280.

The previous prime is 126881969. The next prime is 126882023. The reversal of 126881979 is 979188621.

It is not a de Polignac number, because 126881979 - 2¹³ = 126873787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126881939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36582 + ... + 39899.

It is an arithmetic number, because the mean of its divisors is an integer number (12237120).

Almost surely, 2^126881979 is an apocalyptic number.

126881979 is a deficient number, since it is larger than the sum of its proper divisors (68911941).

126881979 is an equidigital number, since it uses as much as digits as its factorization.

126881979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76570.

The product of its digits is 435456, while the sum is 51.

The square root of 126881979 is about 11264.1901173586. The cubic root of 126881979 is about 502.4968163953.

The spelling of 126881979 in words is "one hundred twenty-six million, eight hundred eighty-one thousand, nine hundred seventy-nine".